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Simplifying 13 + -9X = 112 + -30X Solving 13 + -9X = 112 + -30X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '30X' to each side of the equation. 13 + -9X + 30X = 112 + -30X + 30X Combine like terms: -9X + 30X = 21X 13 + 21X = 112 + -30X + 30X Combine like terms: -30X + 30X = 0 13 + 21X = 112 + 0 13 + 21X = 112 Add '-13' to each side of the equation. 13 + -13 + 21X = 112 + -13 Combine like terms: 13 + -13 = 0 0 + 21X = 112 + -13 21X = 112 + -13 Combine like terms: 112 + -13 = 99 21X = 99 Divide each side by '21'. X = 4.714285714 Simplifying X = 4.714285714
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